| Blackrock to Joliet (Illinois) | 3,700.70 mi (5,955.70 km) |
| Blackrock to Jonesboro (Arkansas) | 4,073.51 mi (6,555.68 km) |
| Blackrock to Joplin (Missouri) | 4,157.84 mi (6,691.39 km) |
| Blackrock to Joppatowne (Maryland) | 3,334.71 mi (5,366.70 km) |
| Blackrock to Juana Díaz (Puerto Rico) | 4,008.17 mi (6,450.52 km) |
| Blackrock to Junction City (Kansas) | 4,148.19 mi (6,675.87 km) |
| Blackrock to Juneau (Alaska) | 4,187.36 mi (6,738.90 km) |
| Blackrock to Jupiter (Florida) | 4,097.61 mi (6,594.46 km) |
| Blackrock to Jupiter Farms (Florida) | 4,101.86 mi (6,601.31 km) |
| Blackrock to Jurupa Valley (California) | 5,142.43 mi (8,275.94 km) |
| Blackrock to Justice (Illinois) | 3,677.92 mi (5,919.04 km) |
| Blackrock to Kahului (Hawaii) | 7,012.67 mi (11,285.81 km) |
| Blackrock to Kailua (Hawaii) | 7,002.75 mi (11,269.84 km) |
| Blackrock to Kalamazoo (Michigan) | 3,567.90 mi (5,741.97 km) |
| Blackrock to Kalispell (Montana) | 4,264.27 mi (6,862.68 km) |
